Grain-oriented electrical steel sheet extremely excellent in...

Details Grain-oriented electrical steel sheet extremely excellent in... Grain-oriented electrical steel sheet extremely excellent in...

2007-11-06

2007-11-06

Sheehan, John P. (Department: 1742)

Metal treatment

Stock

Magnetic

C148S111000, C148S113000

Reexamination Certificate

active

10509347

ABSTRACT:
The present invention: relates to a grain-oriented electrical steel sheet and a double-oriented electrical steel sheet which are used as soft magnetic materials for electrical machinery and apparatus; and is a grain-oriented electrical steel sheet extremely excellent in film adhesiveness, characterized by: containing, in mass, 2.5 to 4.5% Si, 0.01 to 0.4% Ti, and not more than 0.005% as to each of C, N, S and O, with the balance substantially consisting of Fe and unavoidable impurities; and having films comprising compounds of C with Ti or Ti and one or more of Nb, Ta, V, Hf, Zr, Mo, Cr and W on the surfaces of said steel sheet, and a method for producing the steel sheet.

REFERENCES:
patent: 4698272 (1987-10-01), Inokuti et al.
patent: 4938807 (1990-07-01), Takahashi et al.
patent: 5318639 (1994-06-01), Hayakawa et al.
patent: 0193324 (1986-09-01), None
patent: 62-70520 (1987-04-01), None
patent: 8-279408 (1996-10-01), None
patent: 10-140297 (1998-05-01), None

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